102012212 has 6 divisors (see below), whose sum is σ = 178521378. Its totient is φ = 51006104.

The previous prime is 102012187. The next prime is 102012217. The reversal of 102012212 is 212210201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 101082916 + 929296 = 10054^2 + 964^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102012193 and 102012202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751523 + ... + 12751530.

It is an arithmetic number, because the mean of its divisors is an integer number (29753563).

Almost surely, 2^102012212 is an apocalyptic number.

It is an amenable number.

102012212 is a deficient number, since it is larger than the sum of its proper divisors (76509166).

102012212 is a wasteful number, since it uses less digits than its factorization.

102012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25503057 (or 25503055 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 102012212 is about 10100.1095043569. The cubic root of 102012212 is about 467.2515186530.

Adding to 102012212 its reverse (212210201), we get a palindrome (314222413).

The spelling of 102012212 in words is "one hundred two million, twelve thousand, two hundred twelve".